So there is a misconception here that should be addressed. This patch, nor any other to modern devices, will not protect devices from the Stagefright vulnerability. All devices running Android 4.0 or higher are already protected by other mechanisms within Android for all known attacks that this vulnerability has available. What these updates will do, is eliminate the potential of this vulnerability to capitalize on potentially unknown applications that this bug could take on - however there is nothing to indicate that this ever impacted a single device. The number of impacted devices listed in the whitepaper and ensuing response from Google's engineering team was 0.

The devices actually at the highest risk are devices with more than .5 GB RAM running android 2.3.3 to 2.3.7 Gingerbread API level 10 on phones and 3.0 Honeycomb to 3.2.6 (API levels 11 through 13) on Tablets, GoogleTV and other devices with more than 1 GB RAM and are MMS capable (you can imagine this is a tiny number of devices).